KECK OBSERVATORY CALENDAR FOR 2020 -NAUTICAL (computed for altitude 4160.0 m) NAUTICAL(12 deg) TWILIGHT/DAWN MOON(midnight) DATE(HST) SUN TWILIGHT ENDS MOON MOON DAWN BEGINS SUN SIDEREAL TIMES NIGHT (12 deg) Zenith 2020 SET RISE SET RISE TWI MID DAWN LENGTH DARK___ RA DEC Dist 12 18 18 12 12 12 h h % h m d m deg SAT AUG 01 19 09 19 50 20 18 17 39 05 14 04 39 05 07 05 47 16 13 20 24 01 32 9.3 0.0 0 1951-2400 45 SUN AUG 02 19 09 19 49 20 17 18 31 06 12 04 39 05 07 05 48 16 16 20 28 01 36 9.3 0.0 0 2048-2158 42 MON AUG 03 19 08 19 48 20 17 19 17 04 40 05 08 05 48 16 19 20 32 01 41 9.3 0.0 0 2142-1851 42 TUE AUG 04 19 07 19 48 20 16 19 59 04 40 05 08 05 48 16 23 20 36 01 45 9.3 0.2 1 2232-1456 45 WED AUG 05 19 07 19 47 20 15 20 37 04 41 05 09 05 49 16 26 20 40 01 50 9.4 0.8 8 2320-1029 50 THU AUG 06 19 06 19 46 20 14 21 13 04 41 05 09 05 49 16 29 20 44 01 53 9.4 1.5 15 0005-0542 56 FRI AUG 07 19 06 19 46 20 14 21 46 04 42 05 09 05 50 16 33 20 48 01 57 9.4 2.0 21 0049-0048 63 SAT AUG 08 19 05 19 45 20 13 22 20 04 42 05 10 05 50 16 36 20 52 02 02 9.4 2.6 27 0133 0404 70 SUN AUG 09 19 05 19 44 20 12 22 53 04 43 05 10 05 50 16 39 20 55 02 06 9.4 3.1 33 0217 0843 78 MON AUG 10 19 04 19 44 20 11 23 28 04 43 05 11 05 51 16 43 20 59 02 11 9.4 3.7 39 0301 1300 86 TUE AUG 11 19 03 19 43 20 11 00 06 04 44 05 11 05 51 16 46 21 03 02 15 9.5 4.4 46 0349 1654 >90 WED AUG 12 19 03 19 42 20 10 00 48 04 44 05 12 05 51 16 49 21 07 02 20 9.5 5.1 53 0439 2002 >90 THU AUG 13 19 02 19 41 20 09 01 35 14 42 04 44 05 12 05 51 16 52 21 11 02 24 9.5 5.9 61 0532 2218 >90 FRI AUG 14 19 01 19 41 20 08 02 27 15 38 04 45 05 12 05 52 16 55 21 15 02 28 9.5 6.8 71 0627 2327 >90 SAT AUG 15 19 01 19 40 20 07 03 24 16 34 04 45 05 13 05 52 16 58 21 19 02 33 9.6 7.7 80 0725 2320 >90 SUN AUG 16 19 00 19 39 20 06 04 25 17 29 04 46 05 13 05 52 17 01 21 23 02 37 9.6 8.8 91 0823 2149 >90 MON AUG 17 18 59 19 38 20 06 05 28 18 22 04 46 05 13 05 53 17 04 21 27 02 41 9.6 9.6 100 0921 1855 >90 TUE AUG 18 18 58 19 37 20 05 06 32 19 11 04 47 05 14 05 53 17 07 21 31 02 46 9.6 9.6 100 1018 1449 >90 WED AUG 19 18 58 19 37 20 04 19 57 04 47 05 14 05 53 17 11 21 35 02 50 9.6 9.3 96 1113 0946 >90 THU AUG 20 18 57 19 36 20 03 20 41 04 48 05 15 05 54 17 14 21 39 02 55 9.6 8.6 88 1207 0405 >90 FRI AUG 21 18 56 19 35 20 02 21 23 04 48 05 15 05 54 17 17 21 43 02 59 9.7 7.9 81 1301-0151 >90 SAT AUG 22 18 55 19 34 20 01 22 05 04 48 05 15 05 54 17 20 21 47 03 03 9.7 7.2 74 1354-0741 >90 SUN AUG 23 18 54 19 33 20 00 22 49 04 49 05 16 05 54 17 23 21 51 03 08 9.7 6.4 66 1448-1305 >90 MON AUG 24 18 54 19 32 19 59 23 35 04 49 05 16 05 55 17 26 21 55 03 11 9.7 5.7 58 1543-1743 >90 TUE AUG 25 18 53 19 32 19 58 00 24 04 49 05 16 05 55 17 30 21 59 03 15 9.7 4.9 49 1641-2114 88 WED AUG 26 18 52 19 31 19 57 01 16 04 50 05 16 05 55 17 33 22 02 03 19 9.8 4.0 41 1738-2341 78 THU AUG 27 18 51 19 30 19 56 14 39 02 11 04 50 05 17 05 55 17 36 22 06 03 24 9.8 3.1 31 1837-2445 68 FRI AUG 28 18 50 19 29 19 55 15 34 03 07 04 51 05 17 05 56 17 39 22 10 03 28 9.8 2.2 22 1935-2422 58 SAT AUG 29 18 50 19 28 19 54 16 26 04 04 04 51 05 17 05 56 17 42 22 14 03 32 9.8 1.2 12 2031-2240 49 SUN AUG 30 18 49 19 27 19 53 17 14 04 59 04 51 05 18 05 56 17 45 22 18 03 37 9.8 0.3 3 2125-1952 42 MON AUG 31 18 48 19 26 19 53 17 56 05 53 04 52 05 18 05 56 17 47 22 22 03 41 9.9 0.0 0 2216-1610 36 ONE LINE REFERS TO EVENING DATE FULL MOON Aug 03 15:58 UT AND FOLLOWING MORNING. LAST QUARTER Aug 11 16:44 UT All dates and times are zone HST NEW MOON Aug 19 02:39 UT in upper table (except sid time). FIRST QUARTER Aug 25 17:57 UT